Strip-weighing device



May 20, 1924. v 1,494,646

E. G. THOMAS STRIP WEIGHING DEVICE Filed April 14 1922 gwucpfoz [awnnn 677101140.

MMM Z Patented May 20, 1924.

UNITED STATES PATENT OFFICE.

EDWARD c. rrnouas, or TOLEDO, x10, ASSIGNOB 'io Tor-E150 scams column,or-

romeo, 01110; a conronamon OF NEW JERSEY.

STRIP-WEIGHIN G DFVICE.

. Application filed A rau, 1922. Serial in, 552,784.

.. To all whom it may concern:

Be it known that I, EDWARD G. THOMAS, a citizen of the United States,residin 'at Toledo, in the county of Lucas and S tate of Ohio, haveinvented certain new and useful Improvements in Strip-Weighing De vices,of which the following is a specification. l

This invention relates to devices for testing the weight per unit of lenof fabric or other flexible material. It is desirable that coatedfabrics and similar products be of uniform weight, and coating machinesare commonly provided with devices whereby the weight or thickness ofthe coating may be increased or decreased. It is very diflicult,however, to detect small variations in the weight of the coating until aconsiderable length of the material has been coated and the coatin isset sufliciently so that the length-of the material can be handled andweighed, and failure to immediately detect variations in the thicknessor weight of the coating often results in considerable losses. Inorderthat small variations in the weight of the strip per un1t of length maybe readily detect it is (168113. able that a considerable length of thematerial be weighed or tested, and a device 80 arranged for testingconsiderable len ths of materlal while the strip is extende hOllzontallytakes up much valuable space. One of the principal objects of myinvention is to provide a device'which is capable 36 of testingconsiderable lengths of moving strips of material while such material 13arranged to occupy comparatlvely httle space.

Another object of the invention is to provide a strip-receiving elementfor a testin device, upon which element the strip to be tested isarranged in on or more olds so that the amount of space occupied by thelength of fabric being tested is compara- 5 tively small.

Still another object is the provision of a testing device having a stri-receiving element of the character speci edin th pre ceding paragraph,the parts of the testing device bein so designed that the accurac of thetesting device is not materially a fected by chan .in the state oftautness of the material being tested.

Other objects and advantages will be apgth of strips -9 and 10, the leparent from the following description, in which reference is had to theaccompanying drawings illustrating a preferred embodiment 0 my inventionand wherein similar reference numerals designate similar partsthroughout the several views.

In the drawings v Figure I is an elevational view showing a testlggdevice embodying my invention arrang in juxta osition to a calenderingmachine, a part 0 the'housing of the testlng device being brokenaway;and

lgure II is an enlarged fragmentary perspectlve view, with parts brokenaway, show lng apart of the testing device to which mfiilnventionparticularly relates.

eferring to the drawings in detail, the calendering. machine 1illustrated in Figure I is shown merely to better illustrate the purposeof the machine. and forms no part of the present invention. The frame ofthe testing device consists of a base 2 upon which are fixedly supportedupri hts' 3, fulcrum standards 25 and a pedesta 5. Journaled in theupper ends of the uprights 3 1s a pair of re lers 4 which are tangent tothe same plane, the device being preferably so arranged that the lane towhich the rollers 4 are tangent 1s horizontal. Su ported in bearings 6at the upper ends of t e ulcrum standards 25 are fulcrum pivots 7 and 8which are respectively fixed to levers vers 9 and 10 being fixedlyconnected by means of a transversely-extending bar 11, the levers 9 and10 and the bar 11 thus forming a pivoted frame.

Supported upon the pedestal 5 is an automatic predetermined 'weighingand indicat- 'ing device 12, the weigh ng and indicating g -mechanism ofwhich is connected by means of a link 13 to the extended end 14 of thelever 9. The predetermined weighing and indicating mec anism 12 may beof :any desired t and I have not, therefore, shown it in etail. e levers9 and 10 are provided with load pivots 15 upon which is supported thefabric-receiving frame of the testing device. The fabric-receiving framecomprises a pair of substantially T-shaped end members 16, from the to sof each,of which project ears 17 to whic are pivoted self-aligningbearings 18 which engage the load pivots 15.

Journa'led at the opposite ends of the up perwor horizontally-extendingparts of the end members 16 are two parallel rollers 19, and journaledat the lower ends of the vertically-extending parts of the T-shapedmemberslfi is a third roller 20, which is alsoparallel to the rollers19. The vertically and horizontally extending arts of theT-shapedmembers '16 are held in vertical and horizontal positionsrespectively during movements of the levers 9 and 10 by means of a checklink 21, one end of which is pivoted to the lower end of the members 16,its other end being pivoted to one of the fulcrum standards 25.

Slidably mounted upon the levers 9 and 10 are poises 22 and 23 ofsuflicient weight to counterbalance the frame formed by the the rollers19 as is not tend'to move the rollers 19 either upmembersv 16 and therollers 19 and 20, as well as the weight of the length of fabric whichis supported by the frame.

In arran the machine for operation, the strip of fa ric is laid overoneofthe rollers 4 and one of the rollers 19; and thence downwardlaround the roller 20, and up over the ot er roller 19 andthe'other'roller 4. The poises 22 and 23 are so set that when the fabricis of the desired weight per unit- Wardly or downwardly. One-half of theportion of the strip of fabric which extends between the rollers 19 andthe rollers '4, as well,

as the connectin' portion of the stri of fabricxwhich exten s from therollers 9 downwardly around the roller 20, is supported by the levers 9audio. By the use of a strip-receiving frame. havin one or more rollers20, the len' h of fa ric supported bynthe levers 9 an 10 may beincreased to a 0st any desired'extent without materially increasing thes ace occupied by the strip testin device. ince the efiectof agivenvariatlon in weight per unit of length is proportional to thelength of the portion of the strip sup orted by the levers, thesensitivenessof t e device to variations in the weight of the fabric isincreased according While it will be apparent that the illustratedembodiment of my invention herein disclosed is well calculated toadequately ful fill the ob'ects primarily stated, it is to be understoodthat the invention is susceptible gage a looped to variation,modification and change within the spirit and scope of the subjoinedclaims.

Having described my invention, I claim: 1. In a device of the classdescribed, in combination, a air of supports for a strip of material, anmeans engaging the material between said supports 'for detecting changesin the weight per unit of. length, said means including devices forforming a fold of said material and a support for the fold of saidmaterial, the parts being so constructed and arranged that saiddetecting means is substantially unafiected by changes in the tautnessof the strip of material.

2. In a device of the class described, in combination, a pair ofsupports for a strip of material, and a predetermined Weight weighingdevice, adapted to be adjusted to weigh a ortion of the strip ofmaterial be ing teste said predetermined'weight weighing deviceincluding a strip-receiving frame having means engaging said strip, saidmeans normally lying in' the same plane as said supports, and meanspositioned intermediate said strip-engaging means for forming andsupporting a folded portion of said material of-predetermined length.

3. In a device of the class described, in combination, a pair ofsupports for a strip of material, a predetermined weight weighin deviceadapted to support a portion of said strip ,of material between saidpairof supports, said predetermined weight weighing device including a strireceiving frame having a pair of supports ying in the same plane withthe first-mentioned supports when said device is in predeterminedweighing position, and means forming intermediate the second-mentionedsupports a loop of said material of definite length.

4. In a predetermined weight weighing device for strips of fabric, incombination, lever mechanism, and a strip-receiving frame pivotallysupported thereon, sai strip-receiving frame comprising a air of rollerstangent to the same horizonta plane, and additional roller means lyingout of said horizontal plane and located between said first-mentionedrollers and adapted to engage a looped sortion of said material.

5. In a pr etermined weight weighing device for strips of fabric, incombination, lever mechanism, a strip-receiving frame pivotallysupported thereon, said stri -receiving frame comprisin a pair of rolers tangent to the same horizontal plane, and ad ltional roller meanslying out of said horizontal plane and. located between saidfirst-mentioned rollers and adapted to enrtion of said material,manually-ad usts, le means for counterbalancing the major portion of theload car- ;ried by said strip receiving frame, and automatic weighingand indicatingmeans .for detecting variations from a predeterminedWeight of the portion of the strip supported by said frame.

6. In a predetermined weight weighing device for strips of fabric, incombination, a pair of supports lying in the same horizontal plane,lever mechanism, and a stripreceiving frame pivotallysupported thereon,said strip-receiving frame comprising a pair of rollers, said rollersbeing tangent to the horizontal plane in which said supports lie whensaid device is in predetermined weighing position, and additional rollermeans lying out of said horizontal plane and located between saidfirst-mentioned rollers and adapted to engage a looped portion of saidmaterial.

7. In a predetermined weight weighing device for strips of fabric, incombination, a pair of supports lying in the same horizontal plane,lever mechanism, a strip-receiving frame pivotally supported thereon,said strip-receiving frame comprising a pair of rollers, said rollersbeing tangent to the horizontal plane in which said supports lie whensaid device is in predetermined weighing position, and additional rollermeans lying out of said horizontal plane and located between saidfirst-mentioned rollers and adapted to engage a looped portion of saidmaterial, manually-adjustable means for counterbalancing the majorportion of the load carried by said strip-receiving frame, and automaticweighing and indicating means for detecting variations from apredetermined weight of the portion of the strip supported by saidframe.

8. In a predetermined weight weighing device for strips of fabric, incombination, a pair of rollers tangent to the same horizontal plane, anda stripreceiving frame pivotally supported thereon, saidstrip-receiving-frame comprising a pair of rollers, said rollers beingtangent to the same plane to which the first-mentioned rollers aretangent when said device is in predetermined weighing position, andadditional roller means lying out of said horizontal plane and locatedbetween said first-mentioned rollers and adapted to engage a loopedportion of said material.

9. In a predetermined weight weighing device for strips of fabric, incombination, a pair of rollers tangent to the same plane, a movablestrip-receiving frame positioned between said rollers,-said frameincluding a series of rollers adapted to form a strip of material intoloop formation, the end rollers of said series being tangent to thehorizontal plane to which the first-mentioned rollers are tangent whenthe device is in predetermined weighing position.

EDWVARD G. THOMAS.

Witnesses:

FRANCES Donn, H. O. Ennsnmnonn.

